Audio Production

Tutorials

Audacity Tutorials
Hammersound - the basics of digital audio
JISC Digital Media - guides for finding, creating, managing digital media and more
Media College - Audio Tutorials
LearnIT - Digital Audio videos

Video Project - links to free sounds

Music

Artlist.io - music for a variety of genres
AudioBlocks - also has effects and loops; can apply filters
Dig ccMixter - you already have permission
Free Music Archive
Royalty Free Music
Soundzabound - royalty free music for projects
Musicbed - requires free account
Musicovery - discover music by mood selection
Youtube to Mp3 Converter
YTMP3 - another youtube to mp3 converter
PartyCloud - online music mixer
Soundation
Seaquence - creative music generator

Ambience

Ambient Mixer- listen to, mix and create ambient sounds
Media College - Ambient Sounds
Soundation

Foley

What is Foley?

Sound Effects (Sound FX)

Freesound - search, preview and download free sound effects
Free SFX - free sound effects in various categories
Instants - brief, game-show style, reactionary-type sound effects
My Sound FX - free sound effects
Sound Bible - free sound effects
Sound Ideas - links to various sound effect libraries
SoundJay - free sound effects in several categories
Soungle - search for the perfect sound effect for your video
Stock Music - various categories with many effects to find
Soundation
SoundsCrate